Engine or like governor



Sept. 28 1926. v J. L. TAYLOR ET AL ENGINE OR LIKE GOVERNOR Filed Jan.26, 1923 3 Sheets-Sheet 1 fnrehz ar ([L. 77: YL 04' Sept. 28 192s.1.601,269

J. L. TAYLOR ET AL v ENGINE OR LIKE GOVERNOR 7 A alor' War-neg PatentedSept. 28, 1926. 7

stars ,thhzth JOHN LLOYD 'IAYI-|QR, OF LITHERLAND, AND ALBERT EDW'ARDTAYLOR, OF GREAT CROSBY, ENG-LAND.

ENGINE OR LIKE GOVERNOR.

Application filed January 26, 1923, Serial No. 615,178, and. in GreatBritain February 10, 1922.

This invention has reference to governors for controlling the rate ofmovement of engines or machinery for the purpose of preventing theirracing or suddenly increasing their speed owing to the resistance orwork being more or less suddenly relieved, such as happens with modernsteam engines or internal combustion engines used in ships, by thelifting of the propellers more or less out of the water, or to thevariation of the depths of immersion thereof, or to break downs such asthe breaking of apropeller shaft, or crank shaft; and the species ofgovernor to which the invention belongs is that which are mounted on avibrating or reciprocating part of or worked by an engine or machine,and having a weight which when a normal rate of vibration, orreciprocation is exceeded, moves out of its normal position, andactuates through a suitable connecting part, a motor fluid controllingor other valve or part of the stream or internal com-' bustion or otherengine, by which it is governed.

' In the usual form of such governors, the weight is longitudinallydisposed, and mounted on a hinge or pivot, and operates on and inconnection with two pawls one above and one below it,they being adaptedby itto be moved upon their pivots inwards and outwards, according tothe position of the Weight; as for instance the weight acts by a hingeddouble jaw device, on pin .on each of the pawls, but is separate fromthe said device, but connected thereto and pulled normally towards andoperates the device through a spring or springs.

In governors having this construction of weight and pawl operatingparts, defects have been found in a number of cases, which have causedabnormal wear and strain, and actualbreakage of the pawl operating gear,or inaccurate operation, and the chief object and effect of thisinvention as regards these parts is to provide improvements by whichthese defects areobviated, and the governor generally improved and to berelied on at all times, it being particularly desirable that it shouldbe reliable during heavy weather, when it is more or less constantly inaction and use.

In the governor according to this invention, in themechanism and partsby which the top and bottom pawls are actuated, the pivoted device whichacts upon pins or the like of the top and bottom pawls, is in twoseparate parts, which are capable of independent movement, and the endof the weight which is held to the device by spring means, is providedwith an arm or part on each side of it which acts, on the pawls in onedirection, namely, in the in-direction, whilst in the other or outwarddirection, the said separate pivoted devices set on the pawls, securedto each of the devices near the common pivot of same, and to the outerpart of the weight, and passing through an aperture through the weight,retains the inner surface on the arm devices; so that each part or sideof the weight is independently held or pressed towards the pawloperating arm devices, separately. In governors of the kind concerned,as hitherto constructed, if through any cause the upper pawl (which sayis for moving the parts of the governing means back to the normal state)should be partly operated and thrown outwards, and come in contact withor operate the controlling part of the gear, a strain will be thrownfrom this upper pawl to the lower pawl tending to throw the latter out,with the result that the mechanism is strained or rendered inoperative,or break down takes place; but in any case, there is abnormal strain andwearing of the parts, and the parts therefore which act on one anotherbecome loose, and the operation of the governor defective; but by theconstruction above described, abnormal pressure is not transmitted fromone pawl and parts which operate in connection with it, to the other,and the defects and drawbacks referred to are obviated.

Further, in governors of the kind concerned, a supplemental springpivoted mechanism is generally used in connection with the weight,comprising a spring and a spring ad usting screw or device, havinga selflocking spring pressed bolt or pin working in connection with it; thepressure of the spring being transmitted to the weight by a rod or boltor the like. The object of such means is to regulate the action of theweight whereby the governor is adapted to be capable of coming intoaction within a base plate or main carrier frame of the parts of thegovernor. The part which works in contact with the weight, and ispressed to wards it by the spring, consists of a rod or spindle, whichis connected to the weight by a pin or like joint at a point,preferably, about the horizontal plane in which the pivot or spindle ofthe weight stands when in its mid position, so that the movement of thisrod or spindle connection with the weight, outwards and inwards from themean vertical plane, and general vertical axis of the spring device, isvery small, and so wear is very small, and oblique strain and wear duethereto is avoided; whereas in mechanisms used heretofore the manner ofthe action of the spring pressed device, and its arrangement has beensuch that great wear has taken place, resulting in faulty and variableaction; while the cost of the device has been relatively high.

In the drawings, Figure 1 is a front elevation, and Figure 2 an endelevation partly in section showing the construction of pivoted devicein two separate parts; Figures 3 and a are section and outside viewsshowing the supplemental spring pivoted mechanism according to theinvention; Figure 5 shows a modification of the latter.

lVith regard to the feature of the pivoted device being in two separateparts, as shown in Figures 1 and 2, 1 represents the body of the weight.2 and 3 are the upper and lower separate members of the pivoted devicewhich operate in connection with it, both of which are pivoted on acommon fixed pivot pin 4; and 5 are springs which are respectivelyconnected to the levers or members 2, 3, which hold the weight 1, at oneend, towards and on these members, the springs passing through a hole 6in the weight body.

The upper and lower pivoted pawls which operate upon the lever throughwhich the controlling valve or mechanism of the engine is actuated, aremarked 7 and 8, respectively, being mounted on the frame or carrierplate 10 of the governor; and 11 are pins on the pawls 7 and S, whichare operated upon by the levers or members 2, 3, in the outwarddirection. whilst in the inward direction they are operated upon byhorns or projections 12 provided on each side of the weight 1; and thespace between these horns and the ends of the members 2, 3, form jawswithin which the pins 11 lie.

By this construction, the effects and advantages above described areobtained, and the avoidance of defective operation referred to issecured; that is to say, abnormal pressure is not transmitted from theone pawl, say the upper pawl, and the parts which operate in connectionwith it, to the other or lower pawl, and therefore the strains andbreakages referred to, are prevented.

Vith regard to the supplemental pivoted spring mechanism which operatesin connection with the weight 1, this is illustrated in Figures 3 and 4.

This device consists generally of a 1-1 secured to the base or carrier10 governor above the weight 1, and a spring 15 disposed within thecylinder 16 of the case 14, which is pressed upon above by theadjustable screw 17, which is held in the position to which it is turnedby its operating head 18, by a spring pressed bolt 15), which in itslocking position lies in a vertical groove 20 in the screw 1?, the boltbeing pressed back in the action by the sides of the groove pressing onthe rounded nose of the bolt when the screw is turned by hand.

The device which the spring acts on, and which is connected with theweight 1, consists of a rod 21, the enlargement 22 of which has roundedsides, and tits freely in, and is adapted to move in the cylinder 16,whilst its lower end is connected by a pivot joint 2, with a saddlepiece or fitting 24: which passes down into the weight, through a hole25 therein, and is secured by flanges and screws to the top surface ofthe weight as shown.

The pivot 23 is in a horizontal plane in which the weight pivot lieswhen it is in the central position, so that the movement of this rod orspindle connection 23, in relation to the weight 1, outwards and inwardsfrom the mean vertical plane and general vertical axis of the springdevice, is very small. and so wear is very small, and oblique strain andwear due thereto, is avoided.

After the spring device is set or adjusted to impart the required degreeof resistance or pressure to the weight, it remains stationary, andvariations of speed of the engine for which it was primarily set to run,cannot take place.

In Figure 5 is shown a slight modification of the mechanism shown inFigures 3 and 4, namely, instead of the lower end of the spindle 21,being connected by a pivot joint to the weight 1, in the centralhorizontal plane of the weight, the spindle is provided with ahemispherical head, which acts on an annular corresponding seat in thehole 25, in which it works, so that movement of it in relation to theweight, is freely provided.

hat is claimed is 1. A governor including opposing pawls adapted to beprojected to operate a controling member of an engine in one directionor the other, a weight mounted for pivotal movement upon an operatingpart of the engine, means carried by the weight for operating the pawlsin the same direction in the swinging movements of the weight, andindependent members connected to and moving with the weight foractuating the pawls in the opposite direction, whereby in the swingingmovement of the weight in either casing of the direction one of thepawls will be projected to an operative position while the other pawlwill be depressed beyond such position.-

2. A governor comprising pivotally mount-- ed pawls adapted when inoperative position to be projected into the path of the control elementof an engine, a weight pivotally supported intermediate the pawls andhaving projections to bear upon the pawls to move the same to aninoperative position selectively in a particular movement of the weight,and independent members engaging the pawls and operating in movement ofthe weight to move one or the other of the pawls to an operativeposition, and spring means connecting said members and weight to causethe members to move with the weight under a yielding connection.

3. A governor for engines including a base to be connected to a movablepart of the engine, pawls pivotally supported on the base and adapted innormal position to be beyond the path of a control member of the en ineand in operative position to be in the path of such member, a weightpivotally supported intermediate the pawls and movable in the operationof the engine, pins projected laterally from the pawls, projections onthe weightto bear upon the pins to move the pawls to an inoperativeposition when the weight is moved and pivotally mounted membersunderlying the pins and operative to move the pawls to an operativeposition in a particular movement 01": the weight,

springs connecting said members and weight to yieldingly hold themembers in contact with the pins of the pawl in opposition to thecontact of the weight projections there with, whereby said pawls aremoved in reverse directions in any particular weight movement.

4:. A governor including opposing pawls adapted to be projected tooperate a. controlling member of an engine in one direction or theother, a weight mounted for pivotal movement upon an operating part ofthe engine, means carried by the weight for operating the pawls in thesame direction in the swinging movements of the weight, and independentmembers connected to and moving with the weight for actuating the pawlsin the opposite direction, whereby in the swinging movement of theweight in either direction one of the pawls will be projected to anoperative position while the other pawl will be depressed beyond suchposition, and a spring pressure device including a rod connected withthe weight at a point in substantially horizontal alignment with thepivot of the weight when the weight is' in mid position.

5. A governor including opposing pawls adapted to be projected tooperate controlling member of an engine in one direction or the other, aweight mounted for pivotal movement upon an operating part of theengine, means carried by the weight for operating the pawls in the samedirection in the swinging movements of the weight, and independentmembers connected to and moving with the weight for actuating the pawlsin the opposite direction, whereby in the swinging movement of theweight in either direction one of the pawls will be projected to anoperative position while the other pawl will be depressed beyond suchposition, and a spring pressure device including a rod connected withthe weight at a point in substan tially horizontal alignment with thepivot of the weight when the weight is in mid position, said springpressure device being adjustable to vary the engine speed responsiveweight movements at will.

In testimony whereof we have signed our names to this specification.

JNO. LLOYD TAYLOR. ALBERT EDWVARD TAYLOR.

